Mobility as controlled by the transverse component of phonon wave vector in quantum layers at low temperatures

Without resorting to either the Kawaji’s simplified model of interaction with only two-dimensional phonons or to the equipartition approximation for the phonon distribution, the characteristics of the momentum relaxation time of the conduction electrons in a quantized surface layer for interaction w...

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Bibliographic Details
Published in:The Journal of physics and chemistry of solids 2015-01, Vol.76, p.59-63
Main Authors: Nag, S., Bhattacharya, D.P.
Format: Article
Language:English
Subjects:
A. Semiconductors
A. Surfaces
D. Phonons
D. Transport properties
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Summary:Without resorting to either the Kawaji’s simplified model of interaction with only two-dimensional phonons or to the equipartition approximation for the phonon distribution, the characteristics of the momentum relaxation time of the conduction electrons in a quantized surface layer for interaction with intravalley acoustic phonons have been analysed under the condition of low temperature. The scattering and the mobility characteristics thus obtained for an n-channel (100)-oriented Si inversion layer are apparently quite different from what follows in the traditional framework. •Traditionally phonons in 2DEG are also considered 2D with in-plane wave vector.•Transverse component of wave vector also determines the low temperature transport.•Traditional theory assumes elastic interaction and equipartition law for phonons.•Control of transverse component of wave vector on the transport is studied.•Scattering and mobility characteristics obtained for n-channel Si inversion layer.
ISSN:0022-3697
1879-2553
DOI:10.1016/j.jpcs.2014.08.006